Is Cosmology in Crisis?
We know that distant galaxies are racing away from us. But just how fast is the Universe expanding? Scientists are yet to agree on an answer.
Ever since we discovered that distant galaxies are racing away from us, there has been a heated debate over just how fast the Universe is expanding.
At the beginning of the 21st century, we thought we knew the answer. But now, two very different viewpoints have emerged. And they are dividing the scientific community.
The Sky at Night meets leading astronomers and cosmologists on both sides of the debate. Which team has the right answer? Or could both
teams be right? If so, we may need to rethink everything we think we know about the Universe.
Last on
Clips
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How fast is the Universe Expanding?
Duration: 02:41
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Mapping the Cosmic Background Radiation
Duration: 03:41
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Starguide: February 2019
Duration: 02:40
Music Played
Timings (where shown) are from the start of the programme in hours and minutes
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00:00Royal Philharmonic Orchestra, Thomas Beecham
At The Castle Gate From Pelleas and Melisande (The Sky At Night) (1955)
Credits
| Role | Contributor |
|---|---|
| Presenter | Chris Lintott |
| Presenter | Pete Lawrence |
| Executive Producer | Steve Crabtree |
| Presenter | Maggie Aderin-Pocock |
| Producer | Euan McDonald Smith |
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